Daily Amp Loss?

How much amp loss do you see from your battery (or batteries) on a daily basis? Unfortunatley I have been losing about .28 of an amp a day if it is just sitting, which it does during the week because it isn't my DD. After 5 days it is getting hard to start the truck. My primary battery is an Optima Yellowtop and my backup is a Redtop. I think I have a parasitic draw even with the key off and this is strange because there is no computer (except a MSD 6AL) and except for a few common mods the wiring harness is stock.

Could be bad Batt. I jus made a post about this. I had a Optima redtop that was drawing power from itself. I guess one of the cells were shorted or what have you. But took it to auto store, they tested it and deamed it be bad, so I got a Yellow top, hope it lasts.

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